Programmer Think

map/set of data structure and algorithm map and set are a kind of STL Association container. Generally, when used to quickly find out whether an element exists or repeats, they can be solved through the so-called hash set and hash mapping. In addition to being familiar with their underlying principles, they should also be able to use each cont ...

** Implementing two sorting BFS/DFS algorithms with Python class What are BFS and DFS algorithms Code implementation of BFS and DFS algorithms BFS and DFS algorithm (Lecture 3) -- from BFS to Dijkstra algorithm Idea: When you do this problem, you should first create a lot of nodes, and then build the connection relationship between nodes, an ...

2022 Niuke winter vacation algorithm basic training camp 2_ACM/NOI/CSP/CCPC/ICPC algorithm programming high difficulty practice competition_ Ox guest competition OJ catalogue A - furnace stone of Xiaosha B - little sand's magic C-xiaosha's kill D-coloring of small sand E-xiaosha's long road F-calculation of small sand G-xiaosha's body m ...

I will put some main knowledge points that need to be used next to the introduction of the algorithm, and I introduce an algorithm by solving a problem rather than directly; First: find the most value in an array Challenge arena method: const int inf=10e9; int main(){ int n; scanf("%d",&n); int min=inf,max=-inf;//Set the ma ...

This paper uses three ways to realize Fibonacci sequence - array, recursion and optimized recursion. This paper focuses on the comparison and optimization of the implementation efficiency of Fibonacci sequence. 1, Array implementation of Fibonacci sequence Test code: public class ArrayTest { public static void main(String[] args) { ...

I. [Topic difficulty] Class B II. [Title No.] 1044 Mars number (20 points) III. [Title Description] Martians are counted in hexadecimal:Earthman's 0 is called tret by Mars.The Martian characters of earthman numbers 1 to 12 are: jan, feb, mar, apr, may, jun, jly, aug, sep, oct, nov, dec.The Martians call the 12 high-order numbers after ...

I. problem elicitation Internet products should be designed with a ranking list, which is based on scores. The score range is [11000], and each score can have more than one person. 1. Xiao Ming's score is 300. Find out its ranking. 2. After a period of time, the scores of some users have changed, and Xiaoming's scores have also changed. Ask ...

Data structure and algorithm relationship Data structure data structure is a subject that studies the way of organizing data. With programming language, there will be data structure and write more beautiful and efficient codeTo learn data structure, we should consider more problems in life and solve them with programsProgram = data structure + ...

Preface description Algorithm learning, daily problem brushing records. Topic connection Power of 3 Topic content Given an integer, write a function to determine whether it is a power of 3. If yes, return true; Otherwise, false is returned. The integer n is to the power of 3, which needs to be satisfied: there is an integer x so that n == ...

Topic overview Title Link: Ask me to do the problem Problem solution 1, General dynamic programming    in that sentence, the dynamic programming of string class can consider the state of the response problem of the first i characters, such as this problem and definition f ...